When a mysterious masked man appears at 221B Baker Street with a delicate problem, Holmes finds himself suddenly drawn into a web of international intrigue. At the centre of the whole affair lies Irene Adler: opera singer, adventuress, and one of Sherlock’s most worthy opponents. Will Holmes catch Adler before she uses a compromising photograph to topple one of Europe’s most powerful monarchies? Or has the great detective finally met his match? 

A Noiser podcast production.

Narrated by Hugh Bonneville 

Written by Sir Arthur Conan Doyle

Produced by Katrina Hughes and Addison Nugent

Sound Design and Audio Editing by Josh Latham

Compositions: Dorry Macaulay and Oliver Baines

Mix & Mastering: Liam Cameron

Series Consultant: Dan Smith

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